Add DingTalk Workspace stable-release skills

scripts/sync_external_plugins.ps1

@@ -682,6 +682,21 @@ function Get-Clone {
     [object]$Source,
     [string]$CloneRoot
   )
+  if ($Source.PSObject.Properties.Name -contains "releaseChannel" -and $Source.releaseChannel) {
+    if ($Source.releaseChannel -ne "latest-stable" -or $Source.repo -notmatch '^https://github\.com/([\w-]+)/([\w.-]+?)(?:\.git)?$') {
+      throw "releaseChannel requires latest-stable and a GitHub HTTPS repository"
+    }
+    $release = Invoke-RestMethod -Uri "https://api.github.com/repos/$($Matches[1])/$($Matches[2])/releases/latest" -Headers @{ Accept = "application/vnd.github+json"; "User-Agent" = "skill-market" } -TimeoutSec 30
+    $tag = [string]$release.tag_name
+    if ($release.draft -or $release.prerelease -or $tag -notmatch '^v?(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)$') {
+      throw "Invalid stable release tag: $tag"
+    }
+    $Source | Add-Member -NotePropertyName ref -NotePropertyValue $tag -Force
+    if (-not ($Source.PSObject.Properties.Name -contains "manifestOverrides") -or -not $Source.manifestOverrides) {
+      $Source | Add-Member -NotePropertyName manifestOverrides -NotePropertyValue ([pscustomobject]@{}) -Force
+    }
+    $Source.manifestOverrides | Add-Member -NotePropertyName version -NotePropertyValue $tag.TrimStart('v') -Force
+  }
   $clonePath = Join-Path $CloneRoot $Source.id
   Remove-PathIfExists -Path $clonePath -Within $CloneRoot
   $cloneArgs = @("clone", "--depth", "1")
@@ -1016,6 +1031,18 @@ function Sync-SkillCollection {
   Remove-ReadmeLines -Root $pluginDir -LineExcludes $Source.readmeLineExcludes
   Compress-ImagesToWebp -Root $pluginDir -CompressPaths $Source.webpCompressPaths
 
+  if ($Source.PSObject.Properties.Name -contains "materializePaths" -and $Source.materializePaths) {
+    foreach ($item in $Source.materializePaths) {
+      Assert-RelativePathValue -Path $item.source
+      Assert-RelativePathValue -Path $item.destination
+      $src = Join-Path $ClonePath $item.source
+      $dst = Join-Path $pluginDir $item.destination
+      if (-not (Test-Path -LiteralPath $src)) { throw "materializePaths source does not exist: $src" }
+      New-Item -ItemType Directory -Force -Path (Split-Path $dst -Parent) | Out-Null
+      Remove-PathIfExists -Path $dst -Within $RepoRoot
+      Copy-PathIfExists -Source $src -Destination $dst -Within $RepoRoot
+    }
+  }
   $metadata = @{}
   if ($Source.PSObject.Properties.Name -contains "metadata" -and $Source.metadata) {
     $metadata = ConvertTo-Hashtable $Source.metadata